Roller-inking apparatus for fast printing presses



Nov. 22, 1927. 1,650,283

w. KOLMER ET AL ROLLER INKING APPARATUS FOR FAST PRINTING PRESSES Filed April 22. 1926 Patented Nov. 22, 1927.

UNITED STATES PATENT OFFICE.

WILHELI KOLMEB AND ERHABD WIBSGHINGER, OF AUGSBUBG, GERMANY, AS-

SIGNOBS TO MASGHINENI'ABBIK AUGSBURG-NUEBNBERG, AKTIENGESELLSCHAIT, O1 AUGSBUBG, GERMANY, A CORPORATION OI GERMANY,

ROLLER-KEG APPARATUS IQB FAST PB .IINTIIING DRESSES.

Application and April 22, 1986, Serial '1. 108,816, and in Germany m 26, 1925.

There are well' known roller inking-apparatus for fast printing presses which consist of a set of preliminary distributing rollers rotating uniformly in one direction and a set of inking rollers operated by the printing carriage and rotated in two directions according to the direction of travel of said printing carriage. The ink or colour is transferred from the preliminary distributing or Working up set to the inking roller set by a vibrator roller. This well known arrangement has the disadvantage that the vibrator roller having the same diameter as the inking roller cannot pick up the amount of ink required for one printlng from the preliminary distributing roller set and transfer'same to the inking roller set, without the thickness of the ink layer becoming greater than is desirable for effecting a umform transfer. 1

It has been proposed in order toincrease the taking up capacity of the vibrator roller to make the diameter of this roller equal to a multiple of the diameter of one of the.

fiinking rollers. In that case, however, the vibrator roller can make only one or at the utmost two revolutions whilst taking up ink from the reliminary distributing roller set. The bene t derived from the enlargement of the peripheral surface of the vibrator rollerv is therefore offset by the disadvantage of such a large vibrator roller being lncapable of acting as a distributing roller to the same extent as a small vibrator roller. Moreover, a

large vibrator rollers are as a rule to be avoided in roller inking-apparatusbecauso of the increased space which they require.

, The above described defects inherent in the transfer of ink or colour from a pre- 49 liminary distributing or working up set to a proper inking roller set, are according to the present invention. obviated by the 1vision of the preliminary distributing or working up roller set into a stationary and a 3 swmglng group of rollers, the latter'group acting to transfer the ink from the stationmy group, further distributing or working up the ink and transferring same to the inking roller set. This invention, therefore, consists in interposing between the prelimi- 50 nary distributing or working up set of rollers which rotates continuously in the same direction and the inking roller set proper which is operated by the rinting carriage, a group of'distributing roll position rollers. This intermediate group assists whilst it is in contact with the preliminary set of distributing rollers in the distribution'or working up of the ink, and swings vat the required time once for each printing operation toward the inking roller set and transfers the worked up ink to said inking roller. Before this swinging group of distributing rollers is again brought into contact with the preliminary set of distributing rollers, the preliminary set has already sufliciently worked up or distributed the strip of ink which it has in the meantime received from the ink box by means of the lifter roller, so that the two groups of distributing rollers are enabled to co-operate and to effect a ve high degree of ink distribution or worklng up. The advantage realized by this invention therefore consists inthat theswinging group of distributing rollers being composed of several co-operating distributing rollers and composition rollers, is on the one hand capable of taking up. a sufiicient amount of worked up ink in a thin layer and transfer same to the inker set, and on the other" hand, during contact with the preliminary distributin roller set assists in the distribution or wasting up of' the ink. The distributing capacity of the preliminary set is, therefore, considerably increased, and ink is worked up or dis-. tributed also during the interval in which the messenger group swings from the 'preliminary distributing oup to the inker set.

The accompanying rawlng shows by way of example, two constructions embodyingthe features of the resent invention as applied to a two-revolution fast printie g press, Figers consisting of one or 55v more distributing drums and several com-' mking a swing about the axis w of the gear v.

ure 1 being a side elevation of one coning drum g, a steel roller 71. and the composition rollers 1'. and k. The four rollers g, h, i and k are mounted in a swinging frame Z; The inking roller set consists of the dlstributing rollers m, n and o, the steel roller 1), the composition rollers q and r and the mkers 8, t and u. The distributing drum 0 of the preliminary distributing roller set and the distributing-drum g of the swinging distributing roller group are driven from the same gear v which continuously rotates in the same direction. Whilst the pick u roller e receives ink from the ink vtable the swinging messenger group of distributing rollers is in contact with the roller set so that the preliminary distributing roller set will have distributed or worked u the strip'of ink to a s'ufiicient degree be ore the swingin messenger group of distributing rollers is rou ht into contact with the preliminary dist'ri uting roller group.

As is shown in the drawin thepick-up roller 1 is carried by an arm apted to rock about the shaft 0 of the drum a and operated by means of a lever b to which is piv oted a rod 0', which in turn is ivoted to a two-arm'lever e ivoted at and acted upon by a cam g ing against a roll f carried by the said lever e'..

The rocking of the frame 1 carrying-the rollers g, h, i and is is efiecte'd by means of an arm h, a rod z" pivoted to said arm and a two-arm lever Z fulcrumed at k and acted upon by a cam m.

Both the cams g and m are mounted on a shaft making one revolution during each printin operation.

The ame carrying the drum g and the rollers 21, h and k may also be arranged to Otherwise, the arrangement may remain the same as shown in Flg. 1, and the drum 9 may be' rotated by the gear '0. v

Fig. 2 shows a somewhat modified construction in which the ink transferring goup is driven by a gear. a; which also ives the inking rollerset. The rollers g, it, 71 and 7c of the swinging distributing roller set are in. this case mounted in a frame which swings about the axis 3/ of the gear as.

What we claim is:

. termediate 1. In fast printing presses provided with.

a reciprocating printing carnage, a roller mkmg apparatus .composed of an inking roller set operated by said printi carria e, and a preliminary distributing ro er set, t e latter'set oomprlsing a stationary grou of rollers and a group of rollers adapted to rock about a common fulcrum so as to cooperate alternately with said stationary group and said inklng roller set, and a means or perlodically rocking said group of rollers.

2. The combination as specified in claim 1, in which said rocking group of rollers.

comprises at least one distributing roller and a plurali of composition rollers.

3. The com ination as specified in claim 1, in which said rocking group of rollers comprises at least one distri uting roller and a p urality of composition rollers and including' means for rotating said rollers.

4. In fast printing presses provided with a reciprocating printmg carriage, a roller inking apparatus comprising. 'an inking roller set operated b said printing carriage, a preliminary distri uting roller set and an intermediate group of rollers adapted to rock about a common. fulcrum, so as to alternately cooperate with said preliminary distributing roller set and said inking roller set, and a means for periodically rocking saidintermediate roup of rollers.

5.- In fast printing presses provided with a reciprocating printmg carriage, a roller inking apparatus com rising an inking rollerset operated b sai printing carriage, a preliminary distri utin roller set, an mframe carryin said intermediate group and pivoted to roc' about a fulcrum so as to alternately move said" intermediate group of rollers in contact with said preliminary dis tributing roller set and saidinking roller set, and a means for periodically rocking said frame.

6. In fast printing presses provided with a reciprocating printing carriage and inking table, a roller inking apparatus comprising an inking roller set operatedby saidprinting carriage, a preliminary distributing roller. set and an intermediate group of rollers adapted to rock about a common fulcrum so as to'alternately cooperate with said 'prelimina distributingrol er set and said inking ro er set, a means for periodically rocking said intermediate group of rollers, a pick-up roller cooperating with said inkingtable and adapted to transfer the ink therefrom to said preliminary distributing roller set, and a means for operating said pick-uproller.

7. In fast printing presses provided wlth a reciprocating printing carriage, a roller inking apparatus comprising an inking roller set operated by said printing carriage, a preoupof rol ers and a single distributin roller set, including a rollers, and a means for simultaneous y rolarge ribut' gram, and a. intermetating the distributing drums of said r'ediate group of ro ers, including a. distributliminary distributing roller set and sai inifxfi drum, adapted to rock about a common termediate group of rollers.

5 crum so as to alternately coo rate with In testimony whereof. we haveafixed our said pregimina' distributing f0 er set and signatures. said. mking ro er set, a; means for pe'iiodi- WILHELM KOLMEB. cally rockmg said intermediate group of ERHARDJWIBSGHINGER. 

